From patchwork Tue Sep 5 18:52:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13374905 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 59917D53B for ; Tue, 5 Sep 2023 18:53:35 +0000 (UTC) Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-401bbfc05fcso30009055e9.3 for ; Tue, 05 Sep 2023 11:53:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1693940013; x=1694544813; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=rGZDmwAMqeUVhOTfv7ZtpSGAuFAAm5HZQ+raVbVaSso=; b=ahPed7en1h61Zq6GHOCnHc0Dn/7mhkObkeKv6N8dMVMmaJ0MwgnfhT1MJSb8RtkuH2 r1b0wcVmMytUQTmEPdBJPW523iffUU+1xyQdqFmmKI5rp3Nwr97IQGSJdbw6l47WHNk1 CSpAAi6H+RLYETjiE4rwZ0+NWkG8OWviaBZ6qHI2GteRnPAtVBsrhSkcLcfpKqdrqzLc XxIDlynNJs+ypNBh7ziTQfEBPO/jzr7KsaEBXsooLIul9pSL3MN6Cu1FWylpFTDX5Umf ixnJkoD6TVJ063ADRMwywWDke8ienojUQc4+VAfQGNgoIaK61SPbt5SwJ1CKQjt+4NS4 Pf2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693940013; x=1694544813; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=rGZDmwAMqeUVhOTfv7ZtpSGAuFAAm5HZQ+raVbVaSso=; b=Sd65v88Moq26v/IwRdQnxljxg/LgxccFfgl0DrJYlOgRo7xcqEwBNlzztb/pBe+Dnq pP+eSCG8Wtx3BGC2rwvFmZ/oSCJBMNP/VnD4cyrvByyB4kA60kNomGyEBWHLxS7vpmDo 0ty+/FQFntHAyFdMrMSgZSc446Rj0L+AcHYmgqux1pjyIGqy+D+ogvmkwtFIwzHimf1r ehC4TmHpDVbp9WXhcVGxTvdyQQxOaGDfeZPii3rU2ev9bcKPVH8afPMUnQKhiNFsgATL 0Bb3/yBMr+w1rGtzYlel6hV3CixqE+uiH+tb59atUZuOVYt/TPqhNHBP8i3vSl1xyD0e XxEg== X-Gm-Message-State: AOJu0YzR7Mb20Q0Ccqm5OJnlZD/QobUPepgTGjbpnYAmIBbJsKBCT4p0 Vofm9kW5yl9QkKnCUimsXlWI0Q== X-Google-Smtp-Source: AGHT+IE6a92Y8/0xOq//9BYLFPzr9xAdeK40uWCbwfh4Inevy5jL9Qx5QtQIzqIf7nl+RNMdD6lXWg== X-Received: by 2002:a05:600c:2149:b0:402:8c7b:ceea with SMTP id v9-20020a05600c214900b004028c7bceeamr402336wml.30.1693940013467; Tue, 05 Sep 2023 11:53:33 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:7a54:5dbc:6d09:48b7]) by smtp.gmail.com with ESMTPSA id 17-20020a05600c249100b003fbc30825fbsm17550010wms.39.2023.09.05.11.53.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Sep 2023 11:53:33 -0700 (PDT) From: Bartosz Golaszewski To: Aaro Koskinen , Janusz Krzysztofik , Tony Lindgren , Russell King , Mika Westerberg , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , Dipen Patel , Thierry Reding , Jonathan Hunter , Hans de Goede , Mark Gross Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org, timestamp@lists.linux.dev, linux-tegra@vger.kernel.org, platform-driver-x86@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH 06/21] gpiolib: provide gpiod_to_device() Date: Tue, 5 Sep 2023 20:52:54 +0200 Message-Id: <20230905185309.131295-7-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230905185309.131295-1-brgl@bgdev.pl> References: <20230905185309.131295-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: timestamp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski struct gpio_desc is opaque so provide a way for users to retrieve the underlying GPIO device. Signed-off-by: Bartosz Golaszewski Reviewed-by: Linus Walleij --- drivers/gpio/gpiolib.c | 14 ++++++++++++++ include/linux/gpio/driver.h | 1 + 2 files changed, 15 insertions(+) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 4a9af6bfc6d4..9637a79a9a60 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -219,6 +219,20 @@ struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) } EXPORT_SYMBOL_GPL(gpiod_to_chip); +/** + * gpiod_to_device() - Return the GPIO device owning this descriptor + * @desc: GPIO descriptor + * + * Returns: + * Pointer to the opaque struct gpio_device object. This function does not + * increase the reference count of gpio_device. + */ +struct gpio_device *gpiod_to_device(struct gpio_desc *desc) +{ + return gpio_device_get(desc->gdev); +} +EXPORT_SYMBOL_GPL(gpiod_to_device); + /* dynamic allocation of GPIOs, e.g. on a hotplugged device */ static int gpiochip_find_base(int ngpio) { diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index b2572b26c8e3..e3747e730ed1 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -778,6 +778,7 @@ int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset); struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc); +struct gpio_device *gpiod_to_device(struct gpio_desc *desc); #else /* CONFIG_GPIOLIB */